Pilot/Controller Glossary

landing. The route of flight and altitude are shown on
instrument approach procedure charts. A pilot
executing a missed approach prior to the Missed
Approach Point (MAP) must continue along the final
approach to the MAP.
b. A term used by the pilot to inform ATC that
he/she is executing the missed approach.
c. At locations where ATC radar service is
provided, the pilot should conform to radar vectors
when provided by ATC in lieu of the published
missed approach procedure.
(See MISSED APPROACH POINT.)
(Refer to AIM.)

MISSED APPROACH POINT (MAP)- A point
prescribed in each instrument approach procedure at
which a missed approach procedure shall be executed
if the required visual reference does not exist.
(See MISSED APPROACH.)
(See SEGMENTS OF AN INSTRUMENT
APPROACH PROCEDURE.)

MISSED APPROACH PROCEDURE [ICAO]- The
procedure to be followed if the approach cannot be
continued.
MISSED APPROACH SEGMENT-
(See SEGMENTS OF AN INSTRUMENT
APPROACH PROCEDURE.)

MLDI-
(See METER LIST DISPLAY INTERVAL.)

MM-
(See MIDDLE MARKER.)

MOA-
(See MILITARY OPERATIONS AREA.)

MOCA-
(See MINIMUM OBSTRUCTION CLEARANCE
ALTITUDE.)

MODE- The letter or number assigned to a specific
pulse spacing of radio signals transmitted or received
by ground interrogator or airborne transponder
components of the Air Traffic Control Radar Beacon
System (ATCRBS). Mode A (military Mode 3) and

Mode C (altitude reporting) are used in air traffic
control.
(See INTERROGATOR.)
(See RADAR.)
(See TRANSPONDER.)
(See ICAO term MODE.)
(Refer to AIM.)

MODE (SSR MODE) [ICAO]- The letter or number
assigned to a specific pulse spacing of the
interrogation signals transmitted by an interrogator.
There are 4 modes, A, B, C and D specified in Annex
10, corresponding to four different interrogation
pulse spacings.
MODE C INTRUDER ALERT- A function of
certain air traffic control automated systems designed
to alert radar controllers to existing or pending
situations between a tracked target (known IFR or
VFR aircraft) and an untracked target (unknown IFR
or VFR aircraft) that requires immediate attention/action.
(See CONFLICT ALERT.)

MODEL AIRCRAFT- An unmanned aircraft that is:
(1) capable of sustained flight in the atmosphere; (2)
flown within visual line of sight of the person
operating the aircraft; and (3) flown for hobby or
recreational purposes.
MONITOR- (When used with communication
transfer) listen on a specific frequency and stand by
for instructions. Under normal circumstances do not
establish communications.
MONITOR ALERT (MA)- A function of the TFMS
that provides traffic management personnel with a
tool for predicting potential capacity problems in
individual operational sectors. The MA is an
indication that traffic management personnel need to
analyze a particular sector for actual activity and to
determine the required action(s), if any, needed to
control the demand.
MONITOR ALERT PARAMETER (MAP)- The
number designated for use in monitor alert
processing by the TFMS. The MAP is designated for
each operational sector for increments of 15 minutes.
MOSAIC/MULTI-SENSOR MODE- Accepts positional data from multiple radar or ADS-B sites.
Targets are displayed from a single source within a
radar sort box according to the hierarchy of the
sources assigned.
MOUNTAIN WAVE" Mountain waves occur when
air is being blown over a mountain range or even the